code: def _execute_tree_agg(cls, ctx, op):
      inp = ctx[op.input.key]
      result = inp.iloc[:, -1].copy()
      duplicates = inp[~inp.iloc[:, -1]]
      dup_on_duplicated = cls._duplicated(duplicates, op)
      result[~inp.iloc[:, -1]] = dup_on_duplicated
      expect_name = op.outputs[0].name
      if result.name != expect_name:
          result.name = expect_name
      result = result.astype(bool)
      ctx[op.outputs[0].key] = result
  
imports: import numpy
  from ...None import opcodes
  from ...core import OutputType
  from ...core.operand import OperandStage
  from ..utils import gen_unknown_index_value, hash_dataframe_on
  from ._duplicate import DuplicateOperand, validate_subset
label_desc: Use image node_id 14 for calling the DataFrameDuplicated obj's underlying member method code with example usage: obj._execute_tree_agg(cls, ctx, op) without return types